DaVinci Jr 3ind1 Question on correct printing

Hey there,

i have two questions and hope somebody can help me:

1. Stripe on printbed before starting a print

The printer generates two stripes of PLA on the bed to clean the nozzle before starting the printing.

This behavior changed and its not happening anymore. I become obvious, that this is urgently needed, cause i encounter many problems with old filament rests and not sticking PLA without having thing "initial" cleaning lines.

Is it possible to switch this back on?

2. Which SW should i use to print downloaded files? XYZ Scan oder XYZ Ware?
Be default my mac opens the files with the scan app? Is this the reason why i don't see the lines?

Regards

Hendrik